What causes swollen and tender submandibular lymph nodes, and what should be done about it?

Under normal circumstances, swollen submandibular lymph nodes accompanied by tenderness may be related to physiological enlargement, immune response, acute tonsillitis, mumps, or lymph node tuberculosis. If discomfort occurs, it is recommended to seek medical attention promptly and receive symptomatic treatment under the guidance of a physician. Specific analyses are as follows:

1. Physiological Enlargement

Physiological enlargement is usually caused by natural bodily reactions or local irritation, resulting in temporary lymph node swelling without obvious inflammation or infection. Special treatment is generally not required. Maintaining good oral hygiene and avoiding local irritants can allow the swelling to resolve spontaneously over time.

2. Immune Response

When the body is invaded by foreign pathogens, the immune system activates its defense mechanisms, leading to lymph node swelling in response to the infection, which may be accompanied by tenderness. Adequate rest and nutritional supplementation are recommended to enhance immune function.

3. Acute Tonsillitis

The tonsils are part of the body's immune system. When infected by bacteria or viruses, they trigger an inflammatory response. Inflammatory substances and immune cells may activate nearby lymph nodes, causing them to swell and become tender. This condition is typically accompanied by symptoms such as redness and swelling of the tonsils, throat pain, and difficulty swallowing. It is recommended to use medications such as cefixime dispersible tablets, amoxicillin capsules, or antiviral oral liquid under medical supervision to alleviate symptoms.

4. Mumps

Mumps is a respiratory infectious disease caused by the mumps virus, primarily affecting the parotid glands and surrounding tissues, but it can also lead to swollen and tender submandibular lymph nodes. It is commonly associated with symptoms including fever, facial swelling, and pain during chewing. Treatment may include medications such as Pudilan anti-inflammatory oral liquid, ribavirin granules, or Siji antiviral mixture, used under medical guidance to relieve symptoms.

5. Lymph Node Tuberculosis

Lymph node tuberculosis is a chronic inflammation caused by Mycobacterium tuberculosis infection. Once the bacteria invade the lymph nodes, they cause chronic inflammation and granuloma formation, leading to lymph node swelling and tenderness. Systemic symptoms such as low-grade fever, night sweats, and weight loss may also occur. Treatment should follow medical advice and may include medications such as isoniazid tablets, rifampicin capsules, and cycloserine capsules.

Patients are advised to maintain healthy lifestyle habits, eat a light diet, and avoid spicy or irritating foods to help alleviate symptoms.